IR 05000272/1989028
| ML18094B273 | |
| Person / Time | |
|---|---|
| Site: | Salem  |
| Issue date: | 01/09/1990 |
| From: | Mcbrearty R, Strosnider J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | |
| Shared Package | |
| ML18094B272 | List: |
| References | |
| 50-272-89-28, 50-311-89-25, NUDOCS 9002060329 | |
| Download: ML18094B273 (4) | |
Text
U.S. NUCLEAR REGULATORY COMMISSION
REGION I
50-272/89-28 Report No /89-25 50-272 Docket No DPR-70 License No DPR-75 Licensee:
Public Service Electric and Gas Company P. 0. Box 236 Hancocks Bridge, New Jersey 08038 Facility Name:
Salem Nuclear Generating Station Units 1&2 Inspection At:
Hancocks Bridge, New Jersey Inspection Conducted:
December 11-13, 1989 Inspectors: fr Approved by:
Engineer Strosnider, Chief Materials
& Processes Section, EB, DRS date Inspection Summary:. Inspection on December 11-13, 1989 (Combined Inspection Report Nos. 50-272/89-28 and 50-311/89-25)
Areas Inspected:
A routine unannounced inspection was conducted to assess the condition of facility storage tanks and to find out what inspection and maintenance activities are conducted by the licensee to assure conti.nued storage tank integrit Licensee event reports related to storage tanks and the licensee's corrective actions were reviewe Results:
No violations were identifie None of the LERs related to degraded storage tanks; however, the inspector determined that no routine inspection and maintenance program currently exists for storage tanks.
9002060329 900125 PDR ADOCi 0~002i.;!2
- Details 1.0 Persons Contacted Public Service Electric and Gas Company R. Cichen, Senior Staff Engineer - Technical Department G. Dziuba, Senior Engineer - Chemistry Laboratory
- L. Miller, General Manager - Salem Operations M. Pollack, LER Coordinator F. Roberts, Technical Department
- W. Schultz, Manager - Quality Assurance
- E. Villar, Station Licensing Engineer
- P. White, Technical Manager U.S. Nuclear Regulatory Commission
- K. Gibson, Senior Resident Inspector
- S. Pindale, Resident Inspection
- Indicates those present at the exit meet~n.0 Scope of Inspection The purpose of this inspection was to assess the condition of facility storage tanks and to determine what inspection and maintenance programs are implemented by the license Provisions for flood protection in the event of tank failure were reviewed; and licensee event reports and corrective actions related to storage tanks were reviewe.0 Review of Licensee Event Reports Related to Storage Tanks A search of the NRC Licensee Event Report (LER) data base revealed that the following LERs regarding storage tank related problems were issued during the period from 1987 to the present by the licensee for Salem Unit 1:
LER No. 272/87-001; Technical Specification limit for Boron concentration for the Refueling Water Storage Tank (RWST) was exceede LER No. 272/87-019; Oxygen concentration within the Waste Gas Holdup System was greater than 2% for more than 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> contrary to the requirements of Technical Specification Action 3.11.2. This was discovered by sampling the No. 13 and No. 14 Waste Gas Decay Tanks.
- LER N ~001; Three Diesel Generator Day Tanks were not properly anchored to the supporting steel beam foundatio LER No.89-016; Chemistry sampling of the No. 13 waste gas decay tank indicated an oxygen concentration greater than 2% for more than 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> contrary to the requirements of Technical Specification Action 3.11.2. *
There were no storage tank related LERs issued for Unit 2 within the reviewed perio The corrective actions associated with each of LERs were selected for inspection and, in each case, were determined to be acceptabl Because of the recurring nature of the high oxygen concentration problem in the waste gas decay tank the licensee is considering ways to correct the root cause and has conducted an investigation by the Off-Site Safety Review Group of the circumstances surrounding the even The licensee's investi-gation is not completed and the matter is being tracked by the NRC resident inspectors via unresolved item 272/89-15-0 The improper anchc1ing of the Unit 1 diesel generator day tanks was licensee identified and was attributed to a design deficienc The licensee took action to anchor the tanks to the steel beam foundation by welding and additionally to update the associated civil drawing The licensee verified that the Unit 2 tanks were properly anchore The problems identified by the LERs are not, with one exception directly related to the tanks' integrit The exception involved the improper anchoring of the diesel generator day tanks due* to a design deficienc The remaining LERs dealt with the contents of the various tanks, and chemistry parameters which exceeded Technical Specification limit Although no tank deficiencies were identified, the inspector noted that storage tanks generally are not included in licensee maintenance and inspection program A review of approximately 67 storage tank related LERs issued by Region I plants over the last two years indicated that the majority of the identified problems were associated with the chemical analysis and discharge of the tanks/ content One exception to this involved a condensate storage tank which leaked water from a large crack near the bottom of the tan The crack was attributed to a construction deficienc The problems identified by the Region I LERs were attributed to approximately 11 basic cause Leading the list of causes was human error followed by procedure deficiency, equipment failure, and design error or inadequacy.
4.0 Maintenance/Inspection Licensees routinely monitor and chemically analyze the* contents of various storage tanks and perform inspections following system maintenanc The problems at Salem were licensee identified by a review of chemistry log book data, chemistry sampling and by a walkdown of the diesel generator day tank Storage tanks are generally not routinely included in inspection/
maintenance program.0 Conclusion The majority of the problems identified with storage tanks were associated with the tanks' content Storage tanks are generally not included in routine inspection/maintenance programs and are not covered by the inservice inspection requirements of ASME Section X.0 Exit Meeting The inspector met with licensee representatives, denoted in paragraph 1
- at the conclusion of the inspection on December 13, 198 The inspector summarized the scope and findings of the inspectio At no time during the inspection was written material provided by the inspector to the licens~e. The licensee did not indicate that proprietary information was involved within the scope of this inspection.